how does one programmatically create a localdb .mdf?
acceptable solutions exclude visual studio, ssms, aspnet_regsql.
a naive stab at a solution might look like this:
static void Main(string[] args)
{
using (var con = new SqlConnection(#"Integrated Security=SSPI;Data Source=(LocalDb)\v11.0;AttachDbFilename=test.mdf"))
{
con.Open();
using (var cmd = new SqlCommand("CREATE DATABASE test", con))
{
cmd.CommandType = CommandType.Text;
cmd.ExecuteNonQuery();
}
}
}
but of course, this fails in SqlConnection.Open with the error
An attempt to attach an auto-named database for file test.mdf failed. A database with the same name exists, or specified file cannot be opened, or it is located on UNC share.
You cannot connect to a database if the specified .mdf doesn't exist.
So... how do you create one?
Had to piece together several answers from Stackoverflow and the great Getting Started with SQL Server 2012 Express LocalDB article from #AaronBertrand
Code assumes Dapper.NET is installed:
PM> Install-Package Dapper
Programmatic creation:
var dbServerName = "SERVER_NAME";
var dbName = "DATABASE_NAME";
var infoResult = SqlLocalDbCommand($"info {dbServerName}");
var needsCreated = infoResult?.Trim().EndsWith($"\"{dbServerName}\" doesn't exist!");
if (needsCreated.GetValueOrDefault(false))
{
var createResult = SqlLocalDbCommand($"create {dbServerName} -s");
var success = createResult?.Trim().EndsWith($"\"{dbServerName}\" started.");
if (false == success)
{
var msg = $"Failed to create database:{Environment.NewLine}{createResult}"
throw new ApplicationException(msg);
}
var master = $#"Server=(localdb)\{dbServerName};Integrated Security=True;"
using (var conn = new SqlConnection(master))
{
var result = conn.Execute($"CREATE DATABASE {dbName}");
}
var #new = $#"Server=(localdb)\{dbServerName};Integrated Security=True;Database={dbName}"
using (var conn = new SqlConnection(#new))
{
//verify i can access my new database
var tables = conn.Query($"SELECT * FROM {dbName}.INFORMATION_SCHEMA.Tables");
}
}
Helper (thanks T30):
/// <summary>
/// Executes a command against SqlLocalDB
/// </summary>
/// <remarks></remarks>
/// <param name="arguments">The arguments to pass to SqlLocalDB.exe</param>
/// <returns></returns>
/// <exception cref="System.ApplicationException">Error returned from process</exception>
private static string SqlLocalDbCommand(string arguments)
{
var process = new Process
{
StartInfo =
{
FileName = "SqlLocalDB",
Arguments = arguments,
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true
}
};
process.Start();
//* Read the output (or the error)
var output = process.StandardOutput.ReadToEnd();
Console.WriteLine(output);
var err = process.StandardError.ReadToEnd();
Console.WriteLine(err);
process.WaitForExit();
if (err.Exists()) throw new ApplicationException(err); //Is LocalDB installed?
return output;
}
Note that with this solution you won't see the mdf files, i'm sure they exist in some user folder but the key take away is that you'll connect by the connection string
(localdb)\SERVER_NAME;Integrated Security=True;Database=DATABASE_NAME
So I take it what you actually want to do is create a database called test in your LocalDB instance, but you don't have an MDF file already created for this database?
If that's the case, the code you have will fail at the connection phase since you've asked it to attach your test.mdf file.
What you would normally do in this situation is make a connection to the master database initially, and then run the create database statement which will create the test database with it's associated MDF file, maybe try changing your connection string so it looks more like this and then running again:
Integrated Security=SSPI;Data Source=(localdb)\V11.0;Initial Catalog=master
Related
I have a SSIS package to perform incremental processing of the cube. In the sequence container in this package, we have a script task to count the number of rows.
and the code in script task is as follows :
public void Main()
{
string connectionString = "Data Source=localhost;PROVIDER=MSOLAP;Impersonation Level=Impersonate;Catalog=EcovaPlatform";
connectionString = connectionString.Replace("localhost", Dts.Variables["User::CubeServer1"].Value.ToString()).Replace("EcovaPlatform", Dts.Variables["User::CubeName1"].Value.ToString());
string queryString = "evaluate row(\"count\", countrows(BillDetail))";
AdomdConnection connection = new AdomdConnection(connectionString);
connection.Open();
AdomdCommand cmd = new AdomdCommand(queryString);
cmd.Connection = connection;
using (var reader = cmd.ExecuteReader())
{
while (reader.Read())
{
Dts.Variables["CubeBillDetailRowCount1"].Value = Convert.ToInt64(reader[0]);
}
}
Dts.TaskResult = (int)ScriptResults.Success;
But every once in a while, this script task(here I am assuming its the script task) fails. It throws out the following error:
Source Name: Cube Table RowCount
Error Code: 1
Error Description: Exception has been thrown by the target of an invocation.
Now I dont know how to fix this issue. So I am turning to you good folks, to guide me in the right direction.
If somebody wants to look at the XMLA script, I can post that as well.
Thanks.
I have researched on how to export BLOBs to image. A DB has an IMAGE column storing several thousand images. I thought of exporting the table but I get a BLOB file error in EMS SQL Manager for InterBase and Firebird.
There have been good posts, but I have still not been able to succeed.
SQL scripts to insert File to BLOB field and export BLOB to File
This example has appeared on numerous pages, including Microsoft's site. I am using INTERBASE (Firebird). I have not found anything related to enabling xp_shell for Firebird, or EMS SQL Manager for InterBase and Firebird (which I have also installed). My guess is: its not possible. I also tried Installing SQL Server Express, SQL Server 2008, and SQL Server 2012. I am at a dead end without having even connected to the server. The reason being I have not managed to start the server. Followed the guide at technet.microsoft: How to: Start SQL Server Agent but there are no services on the right pane to me.
PHP file to download entire column (may not post link due to rep limitation).
It has a MySQL connect section that daunts me. There on my computer is the DB as a GDB file, I also have XAMPP. I can figure out a way to use this as a localhost environment. I hope this is making sense.
Last solution is to use bcp, an idea posted on Stack Overflow titled: fastest way to export blobs from table into individual files. I read the documentation, installed it, but cannot connect to server. I use -S PC-PC -U xxx -P xxx (The server must be wrong) But the information I find all uses -T (Windows Authentication)
Summing up. I am using Firebird, as EMS SQL Manager. I try to extract all images from images table into individual files. These tools both have SQL script screens, but it appears to be in conjunction with xp shell. What would you suggest? Am I using the wrong SQL manager to accomplish this?
There are several ways:
Use isql command BLOBDUMP to write a blob to file,
Use a client library (eg Jaybird for Java, Firebird .net provider for C#) to retrieve the data,
With PHP you can use ibase_blob_get in a loop to get bytes from the blob, and write those to a file.
I don't use nor know EMS SQL Manager, so I don't know if (and how) you can export a blob with that.
The example you link to, and almost all tools you mention are for Microsoft SQL Server, not for Firebird; so it is no wonder those don't work.
Example in Java
A basic example to save blobs to disk using Java 8 (might also work on Java 7) would be:
/**
* Example to save images to disk from a Firebird database.
* <p>
* Code assumes a table with the following structure:
* <pre>
* CREATE TABLE imagestorage (
* filename VARCHAR(255),
* filedata BLOB SUB_TYPE BINARY
* );
* </pre>
* </p>
*/
public class StoreImages {
// Replace testdatabase with alias or path of database
private static final String URL = "jdbc:firebirdsql://localhost/testdatabase?charSet=utf-8";
private static final String USER = "sysdba";
private static final String PASSWORD = "masterkey";
private static final String DEFAULT_FOLDER = "D:\\Temp\\target";
private final Path targetFolder;
public StoreImages(String targetFolder) {
this.targetFolder = Paths.get(targetFolder);
}
public static void main(String[] args) throws IOException, SQLException {
final String targetFolder = args.length == 0 ? DEFAULT_FOLDER : args[0];
final StoreImages storeImages = new StoreImages(targetFolder);
storeImages.store();
}
private void store() throws IOException, SQLException {
if (!Files.isDirectory(targetFolder)) {
throw new FileNotFoundException(String.format("The folder %s does not exist", targetFolder));
}
try (
Connection connection = DriverManager.getConnection(URL, USER, PASSWORD);
Statement stmt = connection.createStatement();
ResultSet rs = stmt.executeQuery("SELECT filename, filedata FROM imagestorage")
) {
while (rs.next()) {
final Path targetFile = targetFolder.resolve(rs.getString("FILENAME"));
if (Files.exists(targetFile)) {
System.out.printf("File %s already exists%n", targetFile);
continue;
}
try (InputStream data = rs.getBinaryStream("FILEDATA")) {
Files.copy(data, targetFile);
}
}
}
}
}
Example in C#
Below is an example in C#, it is similar to the code above.
class StoreImages
{
private const string DEFAULT_FOLDER = #"D:\Temp\target";
private const string DATABASE = #"D:\Data\db\fb3\fb3testdatabase.fdb";
private const string USER = "sysdba";
private const string PASSWORD = "masterkey";
private readonly string targetFolder;
private readonly string connectionString;
public StoreImages(string targetFolder)
{
this.targetFolder = targetFolder;
connectionString = new FbConnectionStringBuilder
{
Database = DATABASE,
UserID = USER,
Password = PASSWORD
}.ToString();
}
static void Main(string[] args)
{
string targetFolder = args.Length == 0 ? DEFAULT_FOLDER : args[0];
var storeImages = new StoreImages(targetFolder);
storeImages.store();
}
private void store()
{
if (!Directory.Exists(targetFolder))
{
throw new FileNotFoundException(string.Format("The folder {0} does not exist", targetFolder), targetFolder);
}
using (var connection = new FbConnection(connectionString))
{
connection.Open();
using (var command = new FbCommand("SELECT filename, filedata FROM imagestorage", connection))
using (var reader = command.ExecuteReader())
{
while (reader.Read())
{
string targetFile = Path.Combine(targetFolder, reader["FILENAME"].ToString());
if (File.Exists(targetFile))
{
Console.WriteLine("File {0} already exists", targetFile);
continue;
}
using (var fs = new FileStream(targetFile, FileMode.Create))
{
byte[] filedata = (byte[]) reader["FILEDATA"];
fs.Write(filedata, 0, filedata.Length);
}
}
}
}
}
}
guys, now I have an issue, it really makes me wonder.
I'm currently developing a Windows 8 RT app, the app store data to local, so I choice to use the SQLite for WinRT(include the SQLite.cs SQLiteAsync.cs, SQLite3.dll) , the SQLite for WinRT store the database file in the application temporary folder by default
public SQLiteConnection (string databasePath, bool storeDateTimeAsTicks = false): this (databasePath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create, storeDateTimeAsTicks)
{
}
/// <summary>
/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
/// </summary>
/// <param name="databasePath">
/// Specifies the path to the database file.
/// </param>
/// <param name="storeDateTimeAsTicks">
/// Specifies whether to store DateTime properties as ticks (true) or strings (false). You
/// absolutely do want to store them as Ticks in all new projects. The default of false is
/// only here for backwards compatibility. There is a *significant* speed advantage, with no
/// down sides, when setting storeDateTimeAsTicks = true.
/// </param>
public SQLiteConnection (string databasePath, SQLiteOpenFlags openFlags, bool storeDateTimeAsTicks = false)
{
DatabasePath = databasePath;
#if NETFX_CORE
SQLite3.SetDirectory(/*temp directory type*/2, Windows.Storage.ApplicationData.Current.TemporaryFolder.Path);
#endif
Sqlite3DatabaseHandle handle;
#if SILVERLIGHT || USE_CSHARP_SQLITE
var r = SQLite3.Open (databasePath, out handle, (int)openFlags, IntPtr.Zero);
#else
// open using the byte[]
// in the case where the path may include Unicode
// force open to using UTF-8 using sqlite3_open_v2
var databasePathAsBytes = GetNullTerminatedUtf8 (DatabasePath);
var r = SQLite3.Open (databasePathAsBytes, out handle, (int) openFlags, IntPtr.Zero);
#endif
Handle = handle;
if (r != SQLite3.Result.OK) {
throw SQLiteException.New (r, String.Format ("Could not open database file: {0} ({1})", DatabasePath, r));
}
_open = true;
StoreDateTimeAsTicks = storeDateTimeAsTicks;
BusyTimeout = TimeSpan.FromSeconds (0.1);
}
assign to the app temporary folder path.
Now I want to save the database file to another folder, like document folder, in order to save the user data and behavior, import the data when user re-install the app. So I change the save folder, the code as follow
StorageFolder sourceFolder = await KnownFolders.DocumentsLibrary.GetFolderAsync(FolderName);
DatabasePath = Path.Combine(sourceFolder.Path, DBName);
SQLite3.SetDirectory(/*temp directory type*/2, storeFloderPath);
but it throw an excetion at:
var r = SQLite3.Open(databasePathAsBytes, out handle, (int)openFlags, IntPtr.Zero);
Handle = handle;
if (r != SQLite3.Result.OK)
{
throw SQLiteException.New(r, String.Format("Could not open database file: {0} ({1})", DatabasePath, r));
}
it says cannot open the file. I think maybe the problem is 'SQLite3.SetDirectory(/temp directory type/2, storeFloderPath)', the '2' is the stand temp directory type. These no official document, so I try the argument from 0 to 6, it did't work as well, the exception as same as original.
Anyone know how to do it, or it has some error in my codes.
Thanks in advance.
Thanks all you answers, I found a sick way to solve it, When I want to open the database connection in other folder, firstly copy the database file to the application local folder(Windows.Storage.ApplicationData.Current.LocalFolder), and then connect to the database file, and then it successed.
But I wish the developer of the SQLite for WinRT could remark the problem, and fix it
I installed a TFS2012 as a test system and doing some tests before we go productive.
This includes to define many BuildDefinitions which was a lot of work.
After the tests are successful, an new server will be installed with TFS2012 on it.
For this new server - which operates then as the productive system - i would like to restore the BuildDefinitions from the test system. But only the BuildDefinitions, not the whole TeamCollections. Because i ran test checkins and i don`t want these on my productive server.
Now, is it possible to backup and restore BuildDefinitions only?
Maybe it is possible directly throught the Sql database?, but i`am a little affraid of references there, pointing on some other tables.
Best Regards, Peter Bucher
Build definitions are not source controlled. The only option is relying on the TFS database backup where can restore or view the tbl_BuildDefinition* tables in the Tfs_DefaultCollection database.
There is a user voice for this feature and also you can use TFS API to do it.
Add a vote on uservoice:
provide a way to version-control build definitions
Using TFS API
How can I copy a TFS 2010 Build Definition?
Finally i decided not to touch the database, because there are references to a lot of other tables.
I used the TFS API v11 (TFS2012) and a bit C# Code, which i fitted to my needs from this base: How can I copy a TFS 2010 Build Definition?
It copies all Build Definitions from one TFS2012 Server to another. For both servers there is the need to specifiy a TeamCollection and a TeamProject.
So, the copy-task has to be done per TeamProject.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.TeamFoundation.Build.Client;
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.VersionControl.Client;
namespace TFSBuildDefinitionCreator
{
internal class Program
{
private static void Main(string[] args)
{
// Copies build definitions from one server to another.
// Uses the TeamFoundation API V11 (TFS2012).
// Code was used to copy b uild definitions from a test server to a productive.
string sourceServer = "http://testTfs:8080/tfs/MyTeamCollection";
string sourceTeamProject = "MyTeamProject";
string targetServer = "https://productiveTfs:8080/tfs/MyTeamCollection";
string targetTeamProject = "MyTeamProject";
// DropLocation for defininitions: Share on which the build should be dropped.
string defaultDropLocation = "\\\\MyBuildserver\\Builds$";
// Change the DefaultProcessTemplate in the following method below: GetDefaultProcessTemplateByServerPathFromBuildServer.
CopyBuildDefinitions(sourceServer, sourceTeamProject, targetServer, targetTeamProject, defaultDropLocation);
Console.Read();
}
private static IBuildServer GetBuildServerFromServerUrl(string serverUrl)
{
var tfs = TeamFoundationServerFactory.GetServer(serverUrl);
return (IBuildServer)tfs.GetService(typeof(IBuildServer));
}
private static IBuildController GetDefaultBuildControllerFromBuildServer(IBuildServer buildServer)
{
return buildServer.QueryBuildControllers()[0];
}
private static IProcessTemplate GetDefaultProcessTemplateByServerPathFromBuildServer(IBuildServer buildServer, string teamProject)
{
var processTemplates = buildServer.QueryProcessTemplates(teamProject);
var result = processTemplates.First(t => t.ServerPath.Contains("/BuildProcessTemplates/MyDefaultTemplate.xaml"));
return result;
}
private static void CopyBuildDefinitions(string sourceServer, string sourceTeamProject, string targetServer,
string targetTeamProject, string defaultDropLocation)
{
var sourceBuildServer = GetBuildServerFromServerUrl(sourceServer);
var sourceBuildDetails = sourceBuildServer.QueryBuildDefinitions(sourceTeamProject);
foreach (var sourceBuildDetail in sourceBuildDetails)
{
CopyBuildDefinition(sourceBuildDetail, targetServer, targetTeamProject, defaultDropLocation);
}
}
private static void CopyBuildDefinition(IBuildDefinition buildDefinition, string targetServer, string targetTeamProject, string defaultDropLocation)
{
var targetBuildServer = GetBuildServerFromServerUrl(targetServer);
var buildDefinitionClone = targetBuildServer.CreateBuildDefinition(targetTeamProject);
buildDefinitionClone.BuildController = GetDefaultBuildControllerFromBuildServer(targetBuildServer);
buildDefinitionClone.ContinuousIntegrationType = buildDefinition.ContinuousIntegrationType;
buildDefinitionClone.ContinuousIntegrationQuietPeriod = buildDefinition.ContinuousIntegrationQuietPeriod;
// Noch ändern.
//buildDefinitionClone.DefaultDropLocation = buildDefinition.DefaultDropLocation;
buildDefinitionClone.DefaultDropLocation = defaultDropLocation;
buildDefinitionClone.Description = buildDefinition.Description;
buildDefinitionClone.Enabled = buildDefinition.Enabled;
//buildDefinitionClone.Name = String.Format("Copy of {0}", buildDefinition.Name);
buildDefinitionClone.Name = buildDefinition.Name;
//buildDefinitionClone.Process = buildDefinition.Process;
buildDefinitionClone.Process = GetDefaultProcessTemplateByServerPathFromBuildServer(targetBuildServer, targetTeamProject);
buildDefinitionClone.ProcessParameters = buildDefinition.ProcessParameters;
foreach (var schedule in buildDefinition.Schedules)
{
var newSchedule = buildDefinitionClone.AddSchedule();
newSchedule.DaysToBuild = schedule.DaysToBuild;
newSchedule.StartTime = schedule.StartTime;
newSchedule.TimeZone = schedule.TimeZone;
}
foreach (var mapping in buildDefinition.Workspace.Mappings)
{
buildDefinitionClone.Workspace.AddMapping(
mapping.ServerItem, mapping.LocalItem, mapping.MappingType, mapping.Depth);
}
buildDefinitionClone.RetentionPolicyList.Clear();
foreach (var policy in buildDefinition.RetentionPolicyList)
{
buildDefinitionClone.AddRetentionPolicy(
policy.BuildReason, policy.BuildStatus, policy.NumberToKeep, policy.DeleteOptions);
}
buildDefinitionClone.Save();
}
}
}
Hope that helps others.
I am first time trying to use filestream to store pdf files on file system using varbinary(MAX) column type of DB.
I have followed following steps.
enabled filestream feature on SQL server 2008 R2.
Create a filegroup for BLOB storage
created table with blob column of type varbinary(max)
Now, I want to use file upload control to select file and when click on upload button it should save the pdf file. Also, how to retrieve the file?
I have tried following code
protected void btnFSupload_Click(object sender, EventArgs e)
{
SqlConnection cn = null;
SqlTransaction tx = null;
SqlCommand cmd = null;
SqlCommand cmd2 = null;
bool bCommit = false;
try
{
// read in the file to be saved as a blob in the database
FileStream input = new FileStream(#"D:\swami.pdf", FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[(int)input.Length];
input.Read(buffer, 0, buffer.Length);
cn = new SqlConnection("server=at-hetal01\\sqlexpress;Initial Catalog=practice;Integrated Security=true;");
cn.Open();
tx = cn.BeginTransaction();
cmd = new SqlCommand("dbo.stp_AddBLOB", cn, tx);
cmd.CommandType = System.Data.CommandType.StoredProcedure;
SqlDataReader r = cmd.ExecuteReader(System.Data.CommandBehavior.SingleRow);
r.Read();
string id = r[0].ToString();
string path = r[1].ToString();
r.Close();
// get the transaction context
cmd2 = new SqlCommand("SELECT GET_FILESTREAM_TRANSACTION_CONTEXT()", cn, tx);
Object obj = cmd2.ExecuteScalar();
byte[] txCtx = (byte[])obj;
// open the filestream to the blob
SafeFileHandle handle = OpenSqlFilestream(path,DESIRED_ACCESS_WRITE,SQL_FILESTREAM_OPEN_NO_FLAGS,txCtx,(UInt32)txCtx.Length,0);
// open a Filestream to write the blob
FileStream output = new FileStream(handle,FileAccess.Write,buffer.Length,false);
output.Write(buffer,0,buffer.Length);
output.Close();
if (handle != null && !handle.IsClosed)
handle.Close();
bCommit = true;
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
finally
{
if (cn != null)
{
switch (bCommit)
{
case true:
tx.Commit();
break;
case false:
tx.Rollback();
break;
}
cn.Close();
}
}
}
Above code shows error as below
The operating system returned the error '0xc000003a({Path Not Found} The path %hs does not exist.)' while attempting 'NtCreateFile' on 'D:\DB\FS\d11132f8-c2a8-452d-ae0c-208164a550d7\beb8e1f1-8116-440b-870b-7cef4281a15d\0000001c-000000e4-010d'. The statement has been terminated.
So, any clue on this?
If you have altered your table using SSMS table designer, the FILESTEAM column attribute will be lost producing the path not found. Make sure the FILESTREAM attribute is set for the file field by running the follwoing statement in your database:
select SERVERPROPERTY('FilestreamShareName') as ShareName,
SERVERPROPERTY('FilestreamConfiguredLevel') as ConfiguredLevel,
SERVERPROPERTY('FilestreamEffectiveLevel') as EffectiveLevel
You'll need to alter the table via a script and NOT SSMS to tie your varchar(max)/filestream field to the FileGroup you should have already created.
When I ran into this issue, I found the answer on StackOverflow, but can't seem to find it again for the reference.
I know this is old, but for future reference:
We checked the SERVERPROPERTY values that #BMP suggested. They were configured correctly, so that didn't help.
However, we went ahead and turned OFF the windows file share part of the file streaming access. Once this was done, the error went away.
In our case it was a web app running on the exact same machine as the sql server which exhibited the problem. I'm not sure if the web app's app pool user didn't have access to the file share created by windows or not.
The details were:
Windows 2003 Server (x86)
IIS 6
SQL Server 2008 R2 Express
UPDATE: Apparently this worked for a few days. It's not working any more.